package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * ClassName: ShoppingCartServicelmpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author jian Cao
 * @Create 2025/4/9 14:18
 * @Version 1.0
 */
@Service
@Slf4j
public class ShoppingCartServicelmpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {
        //判断当前加入到购物车中的商品是否已经存在了
        ShoppingCart shoppingCart =new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list= shoppingCartMapper.list(shoppingCart);

        //如果已经存在了，只需要将数量加一
        if(list !=null && list.size()>0){
           ShoppingCart cart=  list.get(0);
           cart.setNumber(cart.getNumber()+1);
           shoppingCartMapper.updateNumberById(cart);
        }else {
            //判断本次添加到购物车的是菜品还是套餐
            Long dishId =shoppingCartDTO.getDishId();
            if (dishId !=null){
                Dish dish =dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());

            }else {
                  //本次添加到购物车的是套餐
                Long setmealId =shoppingCartDTO.getSetmealId();

                Setmeal setmeal =setmealMapper.getById(setmealId);
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());

            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
           shoppingCartMapper.insert(shoppingCart);
        }
        //如果不存在，需要加入一条购物车的数据

    }

    @Override
    public List<ShoppingCart> shoppingCart() {
        Long userId=BaseContext.getCurrentId();
        ShoppingCart shoppingCart =ShoppingCart.builder().userId(userId).build();
        List<ShoppingCart> list=   shoppingCartMapper.list(shoppingCart);
        return list;

    }

//    //查看购物车
//    public List<ShoppingCart> showShoppingCart(){
//        //获取到当前微信用户的id
//        Long userId=BaseContext.getCurrentId();
//        ShoppingCart shoppingCart =ShoppingCart.builder().userId(userId).build();
//        List<ShoppingCart> list=   shoppingCartMapper.list(shoppingCart);
//        return list;
//
//    }
     @Override
     public void cleanShoppingCart(){
        //获取当前微信用户的id
         Long userId = BaseContext.getCurrentId();
         shoppingCartMapper.deleteByUserId(userId);
     }
}
